Accupro 75259994 Turning Insert WNMG431 Carbide Wnmg

Product Description

The ACCUPRO 75259994 is a WNMG-style carbide turning insert designed for external turning operations on CNC lathes and turning centers. Manufactured in the ACM20P grade with a CVD coating, this insert carries the ANSI code WNMG431 and ISO code WNMG080404. The trigon 80-degree insert shape provides six usable cutting edges per insert, improving cost-per-edge economics in production environments. The IPK+ chip breaker geometry and negative side clearance are engineered for consistent chip control during steel and stainless steel turning. The insert is held via clamp, lever lock, pin, or screw mounting systems.

This insert is suited for turning steel (ISO P) and stainless steel (ISO M) workpieces where high wear resistance through moderate wear resistance and toughness are required. Typical applications include roughing and semi-finishing passes on general-purpose CNC turning centers in job shops and production machining environments. The 0.4 mm (0.0157 inches) corner radius and maximum depth of cut of 4.20 mm (0.1654 inches) make it appropriate for moderate stock removal on ferrous and corrosion-resistant alloy materials.

Key Features

• WNMG431 / WNMG080404 standard insert geometry for broad toolholder compatibility
• ACM20P carbide grade with CVD coating for high wear resistance on steel and stainless steel
• Six cutting edges per insert reduces per-edge tooling cost
• IPK+ chip breaker geometry for reliable chip control during continuous turning cuts
• Negative clearance (N) tolerance code M for consistent dimensional repeatability insert-to-insert
• Compatible with clamp, lever lock, pin, and screw insert-holding systems

Compatibility

Designed as an OEM-style replacement turning insert for WNMG431 and WNMG080404 toolholders configured for clamp, lever lock, pin, or screw holding methods on CNC turning centers cutting steel and stainless steel workpieces.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the toolholder pocket locating surfaces before engaging the clamping mechanism, and verify the cutting edge is properly indexed before resuming operation. Do not exceed the maximum depth of cut specified for this insert geometry.